bacteria questions? anyone know?

Question

1. A bacterium that lives in the deep ocean vents where hot, mineral rich water and lava emerge from the ocean floor would be classified into what kingdom of bacteria?

2. Explain how endospores have allowed some bacteria, like tetanus, to be a successful species.

3. Compare and contrast binary fission and conjugation; list at least two ways they are alike and two ways they are different.

Answer 1

1) Archaebacteria
2) When conditions in their environment worsen, the bacteria can create endospores so that they can become dormant and become reactivated when conditions in the surrounding environment improve. Endospores are resistant to most agents which would normally kill the vegetative cells they formed from.
3) Binary Fission does not involve any genetic recombination unlike conjugation. Both involve prokaryotes. Both are asexual forms of reproduction. Binary fission creates identical offspring whereas conjugation results in different offspring. Binary fission requires only 1 bacteria, conjugation requires 2 bacteria to come together temporarily.

Answer 2

1. the bacteria would be a thermopile archaebacteria.
2.The primary function of most endospores is to ensure the survival of a bacterium through periods of environmental stress. Therefore this has allowed some bacteria, like tetanus, to be a successful specie. When environmental conditions worsen, they become dormant.
3. Similarity: -both only occur in single celled organism
- both are a form of asexual reproduction
Differences: - binary fission results in a exponential growth rate in bacteria population, conjugation is does not
- binary fission does not change genetic information, conjugation transferrs genetic info between cells.
- binary fission requires one organism, conjugation requires two.

Answer 3

1. Archeabacteria ( extremophiles)
2. they allow the bacteria to survive harsh conditions ( either heat, dessication etc) for MANY years in the soil....I remember hearing that bacteria like Clostridium endospores can survive boiling, and canning in lack of oxygen for tens of years...and then when conditions are favourable they are able to "grow"and live on again.
3. binary fission is asexual reproduction, so the daughter cells are ideantical to the parent ( or practically identical)...its where a cell divides into 2, while conjugation is sexual reproduction with 2 bacteria joined by a conjugation tube that shares DNA and combines it...this allows greater genetic variation in the offspring ( greater variability) while binary fission has less genetic vairation but its quicker, no need for another bactierium etc.

Answer 4

Bacteria form endospores to protect themselves from harsh environment. These endospores are very hardy dormant structures that protect genetic material until such a time when favorable conditions allow vegetative cells to emerge. Clostridium bacteria such as C.tetani are an example of spore-forming bacteria. Spores make tetanus bacterium successful by making it hard to kill. Compare this to a bacterium that dies shortly after exposure to dessicating conditions.

Answer 5

kingdom archaebacteria. example is thermoacidophiles. i don't know the second one. and all i know about bacterial conjugation is that it is the process by which two living bacteria bind together and 1 bacteria transfer if genetic info to the other. binary fission i think...is between to prokaryotic cells. not sure...you got a bio book??? haha maybe you should look it up. good luck with your homework!!

Answer 6

You are so cheating in your biology homework if I am correct. Are you taking an FLVS course because I am and I just had to answer those exact questions a couple days ago.?

Answer 7

they are thermophiles
endospores enable the bacterium to keep on existing, its their means of survival, i.e. reproduction
your third question sounds like you want someone to do your homework for you, now thats cheating

Answer 8

Yup - I sure do! I bet the answers were given in class, too.